Ext.define('MyApp.view.Main',
{
    extend : 'Ext.container.Viewport',
    layout : 'fit',

    requires :
    [
        'MyApp.view.user.List'
    ],

    initComponent : function()
    {
        debugger
        this.items =
        {
            items :
            [
                {
                    xtype : 'userlist'
                }
            ]
        };

        this.callParent();
    }
});